NO2 adsorption on alpha-Fe2O3 transfers 0.72 electrons and quenches surface small polarons, suppressing polaronic conductivity and explaining sensor resistance increase.
Density functional theory based calculation of small-polaron mobility in hematite, Phys Rev B 2014, 89, 245115
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Polaron Conductivity in $\alpha$-Fe2O3 Quenched by Adsorbed NO2
NO2 adsorption on alpha-Fe2O3 transfers 0.72 electrons and quenches surface small polarons, suppressing polaronic conductivity and explaining sensor resistance increase.